jaymen

My KPT-6A has a blown output transistor with some cryptic house part number CR866 which means nothing. Does anyone here have a schematic, parts list, or one of the transistors?
Thanks
Jay

HighPlains

My Feedback: (1)

What year was that transmitter built? I've got some Kraft schematics, but not everything.

Truckracer

My Feedback: (19)

Likewise, I probably have the schematics and maybe even the part, new in bag. Tell me year and battery voltage and I can check for sure.

Truckracer

My Feedback: (19)

Update: I have a new one in a Kraft sealed bag. Kraft p/n 101-032. Numbers on transistor S7930 over CR866. I believe this was the FET output transistor from the later sport series but I no longer remember and no references handy.

Send me a PM and it's yours free. I may need a favor one day! God knows, people have given me enough things over the years so I'm glad to pay back in kind!

jaymen

Well, the radio is a 1976 KPT-6A Sport series, 6 volt with the vertical board between the sticks. The board is made from blue epoxy-glass.
Thanks to everyone for assistance, as I could use a schematic. Apparently somebody connected this thing to 9.6 volts as the 6 volt 33uF was blown. The encoder and modulator appear to be working, as is the oscillator.

woodburner

Jay, how is the circuit board taken off the case? Thanks